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323591 — VALVE,CHECK

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

323591: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING SEAT, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: PLAIN (PIPE) SECOND END, style_designator: STRAIGHT THRU. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-584-1482, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
323591
NSN: 5331-00-584-1482
NIINs: 005841482, 006737924
FSC: 5331 — O-ring
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING SEAT
seat_angle37.0 DEGREES FIRST END
thread_class3A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_stylePLAIN (PIPE) SECOND END
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND SECOND END
mounting_positionHORIZONTAL OR VERTICAL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
disk_loading_methodSPRING
flow_control_devicePOPPET
nominal_thread_size1.312 INCHES FIRST END IN
NSN5331-00-584-1482
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 323591 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL HEIGHT: 0.103 INCHES NOMINAL IN
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.103 INCHES NOMINAL IN
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 323591?
323591 is a VALVE,CHECK.
What is the NSN for 323591?
323591 is cataloged in the U.S. Government catalog under NSN 5331-00-584-1482. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.